CVE-2012-2213
5.0 · MEDIUMSquid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header.
Overview
CVE-2012-2213 is a medium-severity vulnerability affecting squid-cache squid. It was published on April 28, 2012 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical description
Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header. NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a "req_header Host" acl regex that matches www.uol.com.br
Remediation
Check the references section for vendor advisories and patches from squid-cache. Update squid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
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References
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Frequently asked questions
What is CVE-2012-2213?
CVE-2012-2213 is a medium-severity vulnerability affecting squid-cache squid. It was published on April 28, 2012 and has a CVSS 2.0 base score of 5.0 (MEDIUM).
How severe is CVE-2012-2213?
This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2012-2213?
Check the references section for vendor advisories and patches from squid-cache. Update squid to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2012-2213?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-2213 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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